Yamamoto, Jun
Current rating: 1471
Record: 7-8-1
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1556 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 171 | Hiruta, Noriaki (1573) | Won 2-0 | +191575 |
| 2pioneer | 136 | Itagaki, Yota (1632) | Lost 1-2 | -171558 |
| 3pioneer | 640 | Yamazaki, Takayoshi (1350) | Lost 1-2 | -221536 |
| 4pioneer | 646 | Arai, Eiichi (1298) | Lost 1-2 | -221514 |
| 5pioneer | 711 | Shiba, Yoshimasa (1473) | Lost 1-2 | -191495 |
| 6pioneer | 638 | Ikeda, Tomohiko (1324) | Lost 1-2 | -211474 |
| 7pioneer | 549 | Mizuno, Hideki (1431) | Lost 0-2 | -191455 |
| 8pioneer | 438 | Yamaguchi, Takao (1337) | Won 2-0 | +161471 |
| average opponent: 1427record: 2-6 | new rating: 1471 | |||
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 39 | Yoshida, Kazumasa (1500) | Won 2-0 | +181518 |
| 2standard | 72 | Ojima, Toshiaki (1536) | Won 2-1 | +181536 |
| 3standard | 445 | Nakano, Satoshi (1423) | Draw 1-1 | -21534 |
| 4standard | 250 | Matsuura, Shuhei (1431) | Lost 1-2 | -201514 |
| 5standard | 421 | Yoshida, Yutaka (1538) | Won 2-1 | +191533 |
| 6standard | 259 | Tubola, Mark Lawrence (1728) | Lost 0-2 | -151518 |
| 7standard | 410 | Yagi, Kazuhiro (1523) | Won 2-1 | +181536 |
| 8standard | 289 | Miyasaka, Sho (1645) | Won 2-1 | +201556 |
| average opponent: 1541record: 5-2-1 | new rating: 1556 | |||